Basic knowledge of toluene

Toluene (molecular formula: C7H8) is a colorless, volatile liquid with a special aroma. In today's practical applications, it is often used to replace the relatively toxic benzene as an organic solvent, or a commonly used chemical raw material, which can be used to manufacture explosives, pesticides, benzoic acid, dyes, synthetic resins and polyester. It is also a component of gasoline. Toluene may cause acute poisoning and chronic poisoning, which may cause certain harm to the body. In addition, toluene leakage may easily cause fire and explosion accidents, and emergency prevention shall be given.

Classification of Occupational Disease Hazard Factors - Chemical Substances (29) Toluene

1. Possible occupational diseases: toluene poisoning

2.32 examples of industries: (1) oil and gas exploration industry: oil layer physical property analysis; (2) non-ferrous metal mining and dressing industry: mineral processing chemicals; (3) leather, fur and its products industry: brushing, supporting With Baotou, bandage, activated rubber surface, outsole bonding, heel, bakelite... >> more

Toluene harm to health

Routes of entry: inhalation, ingestion, percutaneous absorption.
Health hazard: Irritating to skin and mucous membranes, anesthetic effect on the central nervous system.
Acute poisoning: Inhalation of higher concentrations in a short period of time may cause obvious irritation of the eyes and upper respiratory tract, conjunctival and pharyngeal congestion, dizziness, headache, nausea, vomiting, chest tightness, weakness of the limbs, gait, and confusion. Severe cases may have convulsions, convulsions, and coma.
Chronic poisoning: long-term exposure can occur neurasthenia syndrome, hepatomegaly, menstrual abnormalities of women workers. Dry skin, chapped, dermatitis.

Protective measures

Respiratory protection: Self-priming filter respirator (half mask) should be worn when the concentration in the air exceeds the standard. An air or oxygen breathing apparatus should be worn during emergency rescue or evacuation.
Eye protection: Wear chemical safety glasses.
Body protection: Wear anti-virus infiltration overalls.
Hand protection: Wear latex gloves.
Other: Smoking, eating and drinking are prohibited at the job site. After work, take a shower and change clothes. Maintain good hygiene practices.

First aid measures for toluene poisoning

Skin contact: Remove contaminated clothing and wash skin thoroughly with soap and water.
Eye contact: Lift eyelids and rinse with running water or saline. Seek medical attention.
Inhalation: Remove quickly from the scene to fresh air. Keep the airway open. If breathing is difficult, give oxygen. If breathing stops, perform artificial respiration immediately. Seek medical attention.
Ingestion: Drink plenty of warm water, induce vomiting, and seek medical attention.

Toluene fire extinguishing method

Spray water to keep the fire container cool. Move the container from the fire to the open space as much as possible. If the container in the fire has changed color or produces sound from a safety relief device, it must be evacuated immediately. Extinguishing media: foam, dry powder, carbon dioxide, sand. Note: Fire extinguishing is not effective.

Toluene leakage emergency treatment

Quickly evacuate personnel from the contaminated area to a safe area, and conduct isolation to strictly restrict access. Cut off the fire. It is recommended that emergency personnel wear self-contained positive pressure breathing apparatus and wear fire protective clothing. Cut off the source of leakage as much as possible to prevent entry into restricted spaces such as sewers and flood drains. >> more

Toluene monitoring method

Water quality test tube method; gas detection tube method; portable gas chromatography

Environmental hazards of toluene and environmental standards

The maximum allowable concentration of harmful substances in the air of China (TJ36-79) workshop is 100mg/m3

China (GB16297-1996) Maximum Allowable Emission Concentration of Integrated Pollutant Emission Standards (mg/m3) >> Detail

Diagnostic criteria for occupational acute toluene poisoning (GBZ16-2002)

Occupational acute toluene poisoning refers to a systemic disease characterized by damage to the nervous system caused by exposure to a relatively large amount of toluene in a short period of occupational activities. Can cause heart, kidney, liver, lung damage. This standard specifies the diagnostic criteria and principles of treatment of occupational acute toluene poisoning. This standard applies to the diagnosis of occupational acute toluene poisoning. The diagnosis of non-occupational acute toluene poisoning can also refer to this standard. >> more